WATCH: The Queen steps out after Charles' 70th birthday bash

The 92-year-old monarch didn't miss a beat, attending a charity event in London looking fresh-faced and stylish in a magenta outfit.

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Queen Elizabeth II joined the King of Norway to celebrate the centenary of the Anglo-Norse society, a charity which promotes relations between Britain and Norway.

King Harald V praised Her Royal Highness for her good health.

"She is in great shape," he said.

Channel Seven

"It is completely incredible to more than 90-years-old. It is always very nice and to meet her. We talked about everything possible. We are a family."

The night before, Royals from across Europe descended on London to attend the glittering party the Queen threw to honour Prince Charles’ landmark birthday.

According to the Daily Mail, King Harald, 81, thanked the Queen for her hospitality.

“Thank you for a nice party yesterday," he said.

The Queen replied: "I'm so glad Charles enjoyed himself."

Holly RichardsHolly Richards is a freelance contributor to WHO and New Idea. With more than a decade of experience in the entertainment world she lives and breathes everything from the latest Bachelor gossip to who designed Meghan Markle's most recent outfit. Check out her reality TV podcast Real Talk With Holly & Ali.